期刊
CURRENT OPINION IN VIROLOGY
卷 2, 期 1, 页码 20-27出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.coviro.2011.11.007
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资金
- Swiss National Foundation [Ambizione PZ00P3_131988, Sinergia CRSII3_125110/1]
Poxviruses are characterized by their large size, complex composition, and cytoplasmic life cycle. They produce two types of infectious particles: mature virions (MVs) and extracellular virions (EVs). Both MVs and EVs of vaccinia virus, the model poxvirus, take advantage of host cell endocytosis for internalization: they activate macropinocytosis - the most suitable form of endocytosis for large particles. Although largely dependent on the same cellular machinery, MV and EV entry differs with regard to the mechanisms used to trigger macropinocytosis and to undergo fusion. While EVs have to shed an additional membrane to expose the fusion complex, MV fusion requires the inactivation of fusion inhibitory proteins absent in EVs. This review highlights recent advances in the understanding of poxvirus MV and EV cell entry.
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